King Billion Electronics Co., Ltd

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HF88M08

January 16, 2004

Page 1 of 19

V1.11

This specification is subject to change without notice. Please contact sales person for the latest version before use.

- Table of Contents -

1

Function Description______________________________________________________________2

2

Features ________________________________________________________________________2

3

Functional block diagram __________________________________________________________3

4

Pin Description __________________________________________________________________4

5

Pad Location ____________________________________________________________________5

6

Device Operation _________________________________________________________________6

6.1

Retrieve data in Data File ____________________________________________________________8

6.2

Loading the Address Counter _________________________________________________________8

6.3

Sequential Read Mode and Auto Increment of Address Counter ____________________________9

6.4

Output data to External I/O __________________________________________________________9

6.5

Reading Input pin status _____________________________________________________________9

6.6

Retrieving the Contents of Expansion I/O registers _______________________________________9

7

Timing Diagrams ________________________________________________________________10

7.1

Data File Read Cycle _______________________________________________________________11

7.2

Interrupted by I/O when Loading Address Counter______________________________________12

7.3

Setting and Reading the I/O Mode for P0 and P1 ________________________________________13

7.4

Reading P0 and P1 in Mixed-I/O Mode ________________________________________________14

7.5

Reading the input pins ______________________________________________________________15

7.6

Output to P0 and P1 Ports___________________________________________________________16

8

Absolute Maximum Rating ________________________________________________________16

9

AC Electrical Characteristics ______________________________________________________16

10

DC Electrical Characteristics ____________________________________________________17

11 Application Circuit Diagram _______________________________________________________17

12

Updated History _______________________________________________________________19